Voltage References

Voltage references are electronic devices that provide a fixed voltage. They provide a constant voltage regardless of external factors like the load on the device or fluctuations in the power supply.


Voltage references have different characteristics depending on their purpose. Voltage references used in laboratory applications are designed to have extremely high precision and accuracy, whereas those used as regulators for computer power supplies are much cheaper but less precise. 


Types of voltage references

There are many different kinds of voltage references, generally categorised by type, tolerance, rated voltage, reference voltage and rated current. The most common tolerances are ±2%, ±1% and ±0.5%, but voltage references are available even up to ±40%. 


What are voltage references used for? 

Voltage references can be used for a variety of different precision measurement and control systems such as power supplies in personal computers and analog-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. 


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Description Price Nominal Voltage Package Type Reference Type Initial Accuracy Mounting Type Topology Maximum Output Current Maximum Input Voltage Minimum Output Voltage Maximum Output Voltage Pin Count Line Regulation Load Regulation Dimensions
RS Stock No. 661-9489
Mfr. Part No.REF3330AIDCKT
PHP106.58
Each (In a Pack of 5)
units
3V SC-70 Fixed ±0.15 % Surface Mount Series 5mA 7.5 V - - 3 50 ppm/V 50 ppm/mA 2 x 1.25 x 0.9mm
RS Stock No. 179-7005
Mfr. Part No.ADR510ARTZ-Reel7
PHP71.757
Each (In a Pack of 10)
units
- SOT-23 Precision ±0.35 %, ±3.5 mV Surface Mount Shunt 10mA - 0.99 V 1 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 661-9300
Mfr. Part No.LM4040A41IDBZT
PHP150.254
Each (In a Pack of 5)
units
4.096V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA - - - 3 - 7 mV 2.92 x 1.3 x 1mm
RS Stock No. 661-9792
Mfr. Part No.LT1009CLPR
PHP75.08
Each (In a Pack of 5)
units
2.5V TO-92 Fixed ±0.2 % Through Hole Shunt 10mA - 2.485 V 2.515 V 3 - 10 mV 4.83 x 3.43 x 3.68mm
RS Stock No. 145-6903
Mfr. Part No.REF3012AIDBZT
PHP55.13
Each (On a Reel of 250)
units
1.25V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 1.248 V 1.253 V 3 190 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS Stock No. 145-6978
Mfr. Part No.TL431CPSR
PHP5.20
Each (On a Reel of 2000)
units
2.5 - 36V SOP Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 6.2 x 5.3 x 1.95mm
RS Stock No. 914-0270
Mfr. Part No.ADR5041BKSZ-REEL7
PHP48.30
Each (In a Pack of 10)
units
2.5V SC-70 Fixed ±0.1 % Surface Mount Shunt - - - 2.5 V 3 - - 2.2 x 1.35 x 1mm
RS Stock No. 183-2685
Mfr. Part No.ADR421ARMZ
PHP336.50
Each (In a Pack of 2)
units
2.5V MSOP Precision 0.12% Surface Mount Series 10mA 18 V 2.49 V 2.503 V 8 35 ppm/V 70 ppm/mA 3.2 x 3.2 x 0.95mm
RS Stock No. 758-9702
Mfr. Part No.AD588JQ
PHP1,918.07
Each
units
5 V, 10V CERDIP Programmable ±0.06 % Through Hole Series 10mA 36 V - 10 V 16 ±200 μV/V ±50 μV/mA 21.34 x 7.87 x 3.56mm
RS Stock No. 145-0652
Mfr. Part No.TL431BCD
PHP19.95
Each (In a Tube of 75)
units
2.5 - 36V SOIC Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 538-7734
Mfr. Part No.ADR380ARTZ-REEL7
PHP101.75
Each
units
2.048V SOT-23 Fixed ±0.24 % Surface Mount Series 5mA 18 V 2.043 V 2.053 V 3 25 ppm/V 70 ppm/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 307-1780
Mfr. Part No.REF1004C-2.5
PHP182.27
Each
units
2.5V SOIC Fixed ±0.8 % Surface Mount Shunt 20mA - 2.49 V 2.511 V 8 - 10 mV 4.9 x 3.91 x 1.58mm
RS Stock No. 802-3935
Mfr. Part No.ADR5045BRTZ-R2
PHP101.272
Each (In a Pack of 5)
units
5V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA - 4.995 V 5.005 V 3 - - 3.04 x 1.4 x 1.02mm
Related Products
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.